Cheryl says that the system of equations at the right MUST be solved by elimination rather than by substitution.
a. Explain why Cheryl is not correct.
- 7x + 12y = 13
7x - 11y = -9
b. Why might Cheryl think this is true?

i dont know if you cant find a way its best to actually add all of them start from 105 tho

step-by-step explanation:

351°f

step-by-step explanation:

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation:

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24